To calculate the force of two vehicles traveling at 13.4112 m/s, one weighing 65 kg and the other 75 kg, the equation F=ma is essential. The discussion highlights the importance of understanding kinetic energy and momentum, with the 65 kg vehicle having a kinetic energy of 5845.4593 kJ and the 75 kg vehicle 6744.7607 kJ. The crumple zone of 0.5 m is relevant for assessing the impact force, as it can absorb energy and reduce the force experienced during a collision. The user seeks guidance on calculating the change in energy upon impact, indicating a focus on the effects of the crumple zone and momentum change. Overall, the conversation revolves around applying physics principles to analyze vehicle collisions effectively.